Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4500642 | Infrared absorbing quartz glass with iron and aluminum | Hirai Akihiro | 1985-02-19 |
| 4419118 | Quartz glass and a process for making same | Hirai Akihiro | 1983-12-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4500642 | Infrared absorbing quartz glass with iron and aluminum | Hirai Akihiro | 1985-02-19 |
| 4419118 | Quartz glass and a process for making same | Hirai Akihiro | 1983-12-06 |